Pneumatic wheel.



S. P. 00X.

PNBUMATI WHEEL. APPLICATION FILED sEPT.24,1910.

Patented Sept. 12, 1911.

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equally'distant.

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` erence indicate corresponding 25- STEPHEN P. COX, 0F BAYPORT, NEW YORK.

PNEUMATIC WHEEL.

Specication of Letters Patent. I Patented Sept. 12, 1911.

Application filed September 24, 1910. Serial No. 583,601.

To all whom it may concern: 4

Be it known that'I, STEPHEN P. Cox, a citizen of the United States, and a resident of Bayport, in the county of Sutt'olk and State of New York, have invented a new and Improved Pneumatic Wheel, of whichA the following is a full, clear, and exact descript'ion. y

My invention relates to pneumatic wheels for use uponvehicles generally, and particu.

larly automobiles,horseless carriages and the like, for running upon streets and roads.

More particularly stated, I provide an improvedconstruction of wheel, in which the tire is made up of separate units, each carry-ing its own pneumatic cushion, and its individual foot (or feet) associated with said "cushiorn thervarious units being .re-

movable at will and consequently interchangeable. v

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of refparts in all the views, and in which Figure 1 is aside view, partly in 'elevation and partly in section, showing my improved' wheel complete; Fig. 2 isa section onthe line 2-2 of Fig. 1 looking in the direction of the arrow; Fig. 3 isa section on the line S-Sof Fig. `1 looking in the direction of the arrow; and Fig. 4 is a perspective of one of the units removed from'the wheel.

The wheel is shown in Fig. 1 and is provided with a hub 4 and spokes 5, the latter carrying the rim 6 which may be of wood.

incircling this felly is a metallic rim 7,

havingthe general'form of an annular trough with parallel. walls and flat bottom, as will be understood from Fig. 2. The metallic rim 7 is secured to the wooden rim 6 by aid of bolts 8 and nuts 9. The metallic rim 7 is provided with lugs 10 integral with it and disposed internally theselugs, being arranged in pairs, the pairs being spaced The rim 7 is provided with notches 7 a corresponding to the various pairs and likewise spaced equally di`stant. A number of tie plates 1l are fitted into 'the'notches 7a and are thus sunken flush with the outer edges of the metallic rim 7. A number of sm'all bolts 12 are used to hold the tie plates 11 in position, being inserted through holes in the ends of the tie plates and extending into the lugs which `I limit myself` to any special use ing them, as will beuderstood from Fig. 2.

At 13 are a numberof separate air cushions, each havinggenerally a sector like form and being crowned with a tread portion 14 also of sectory like fform. Thea-ir cushion and tread tegrally together, and forthis purpose, are made each entirely' of a single member of rubber, though I do not limit myself to this precise arrangement. Each air'cushion' at its end (see Fig. 4) is'provided with two outer notches 15, and with4 one middle notch 16. Each air cushion is further provided at one of its ends only with a tube 17, having a valve 18 disposed integral of the cushion. Each tube 17 is 'further provided .with a nipple 19, which projects' outwardly a very slight distance, and is covered and protected by the tie plate.

`Each air cushion 13 is slightly longer than its shoe 14, and on this account the completeA portion are'connected inunit consisting of air `cushion and slice' is 'plate 11 holds down the abutting 'ends of two air cushions, and consequently helps to retain two units in place.

In orderltoremove anyone of. the units, the tie plates 11 at the ends of the unit'are taken od', this beino'accomplished luy-taking out the bolts 12'. In order to' inflate one of the air'cushions, it is not necessary to remove the unit containing the cushion. The adjacent tie plate 1s removed. A tube froman air pump is temporarily connected with the nipple 19 and the air forced through, the manner of inflation being very much like that of inflat-ing a tire. The various air cushions being independent of each other,

the several shoes 14 are similarlyindependent, and yif one breaks down or becomes damaged in'any way, this does not interfere greatly ,with the action of the wheel as a whole.

I do not ,limit myself tothe precise construction shown and described, as variationsmay be made therein, without departing from the spirit of my invention. Neither do or services to any spethe wheel is to be performed by the wheel or cial type of vehicle upon which -to be operated.

l .(lopies of this 'patent' may berobtailnedior Having thus described my invention, I claim as new and desire to secure by Letters Patent. l

l. A pneumatic Wheel,V comprising a. rim provided internally with lugs, a plurality of air cushions, each fitted to said rimnnd having ends shaped to lit around'said lugs, andl r 'meanslfor holdingsnid air cushions in position.

tralV lmemberof substantial circular form, and 'a' plurality of separate air cushions mounted upon said central member and hav- 2. Af pneumatic Wheel', comprising a een ing portions disposed endto end, said portions being provided with grooves, each unit having an air pipe disposed partly Within the groove at one end of a unit, rand partly Within another groove disposed at the end of the next successive unit.

In testimony whereof' I have signed my name to this specification in the presence of two subscribing Witnesses.

STEPHEN P. COX. Witnesses: l

` WALTON HARRISON,

PHILIP D. RonLHAUs..

ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

